Two charged particles, each with a charge of +q , are located along x -axis at x = 2 and

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1. Electric Charges and Fields

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Two charged particles, each with a charge of $+q$, are located along the $x$ -axis at $x = 2$ and $x = 4$, as shown below. Which of the following shows the graph of the magnitude of the electric field along the $x$ -axis from the origin to $x = 6$?

A

B

C

D

Solution

By symmetry, $E=0$ at the midpoint and goes to infinity near each charge $(E=$ $\left.\mathrm{kQ} / \mathrm{r}^{2}\right)$

Standard 12

Physics

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